Grinding machinery



A ril 39, 11995. w. PEASLEE ET AL. 1,999,778

' GRINDING MACHINERY Filed May 5, 1933 4 Sheets sheet 1 Aprifl 3(1), 1935,

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w. PEASLEE ET AL.

GRINDING MACHINERY Filed May 5, 1933 4 Sheets-Sheet 2 Apmll 30, 1935. w. PEASLEE ET AL GRINDING MACHINERY 4 Sheets-Sheet 3 Filed May 3, 1953 Apriifi 3U, I935. w. PEASLEE ET AL 1,999,77fi

GRINDING MACHINERY Filed May 3, 1935 4 Sheets-Sheet 4 I I I Allawe/MM;

Patented Apr. 30, 1935 PATENT orricr.

GRiNDiNG 'MAC'HIN ERY Willetts lpaslee and Frederick S. Haas, Cincin- V nati, Ohio, assignors to Cincinnati Grinders Incorporated, Cincinnati, Ohio, a corporation Application May 3, 1933, Serial No. 669,213

aolaiins. I 01. 51-49) This invention relates to improvements in grinding machines and particularly toimpro'vements in machines for finishing 'or grinding rolls to definite forms or contours.

5 Ari-object of thisinventi'cniis the provision of i a roll grinding machine embodying improved mechanism for. effecting the formation of large rolls and particularly for forming the endsv thereof. i

Another object. of the invention is the provision of a 'cambering mechanism for use with. roll grinding machines for effecting and 'con-' trolling the contour thereof, together with supplementary :cambering devices.

A further object of this invention is the provisionof a mechanism as above referred to, in which supplementary or additional cambers or other forms may beprcvided on large rolls which are employed in steel mills, paper mills and the.

like. i

A still further object of this invention is the provision of an improved. cambering mechanism whereby various contours or cambers may be provided on work pieces without the necessity of reconstructing the mechanism or providingdifferent expensive essential parts thereof.

It is also an object of this invention to provide a cambering mechanism for use with rollgrinders and the like that includes a sectional. cam or camber bar, the sections of which are capable of relative adjustment for. thereby obtaining var-i Figure l is a front elevation ofa grinding machine embodying the improvementsof this invention.

Figure 2 is a top plan view of the machine shown in Figure 1.

Figure 3 is a transverse sectional viewftaken Li) On line f 1.

Figured is a fragmentary rear elevational view of a portion of the cambering mechanism-as seen from linef44 on Figure 3.

Figure 5 is a-fragmentary sectional view taken on line 55 of Figure 4. Y

figuration at or near the ends thereof.

Figure 6 is a fragmentary sectional view taken on line. G fi of Figure 4.

Figure 7 is a fragmentary sectional view taken on line 1-"! 'of Figure 4.

Figure 8 is an elevational view of the wheel traverse operating and control mechanism as seen particularly from line 8--.8 on Figure 1.

Figure 9 is a transverse sectional view taken in a plane behind that of Figure -8.

Figure 10 is a view, partly in section and partly in elevation, as seen from line lGlI on Figure 9.

Throughout the several views of the drawings similar reference characters are employed to note the same 'or similar parts.

'The machine of this invention is particularly adapted for operation on large mill rolls, such as are used in steel or paper rolling mills. These rolls are either provided with a concave or convex surface, extending from end to end, or they may be cylindrical throughout their length. In addition certain of the rolls are or may be provided with a cai'nloer or bevel or any other desired con- In the past-it been customary to either retrue or shape the grinding wheel to effect this configuration onthe ends of the rolls or else to place said rolls in a subsequent machine to effect this operatioh. By this invention the said formation of the body portion of the roll, as well as the chamfering or the cambering of the ends thereof, is provided in one continuous operation and by the same grinding wheel.

The machine of this invention comprises, in general, a bed which supports the usual work supporting and rotating mechanism, a grinding wheel for movement toward the work to effect a stock removal therefrom and its controlling mechanism, and means for effecting a relative traverse between the work and the wheel, together with the cambering mechanism for controlling the formation or ultimate contour of the work.

The machine specifically illustrated in the drawings comprises a bed I5 mounted on a concrete foundation l6, here shown as 'what' might be termed an island. The foundation I6 is entirelysurrounded by a'channel [1, containing the coolant to be supplied to the work and wheel during the grinding operation as is usual ingrinding practice. side at the level of the floor and on the other side "at the level of the foundation which is disposed below the floor level.

The machine bed I5 is provided 'on one end with a supporting surface 18 on which is.dis

The channel 11 terminates on one posed the work driver or headstock 19. The headstock l9 has projecting therefrom the center 25, which is surrounded by a face plate 25, carrying the driving dogs 22. Any suitable or desirable means may be employed for rotating the face plate and dogs 22, but as here shown this mechanism comprises an electric motor or prime mover 23 coupled through the coupling 24 with a driving shaft 25 associated with the headstock IS.

The bed 55 from the supporting surface 18 to its other end is provided with guideways 26 and 2?, the former being a flat way, while the latter is of the inverted V type. Mounted on the guide ways 26 and 21 for movement there along is a tailstock 28 from which projects the center 29 in axial alignment with the headstock center 20, and together roughly positioning the work onthe bed. The work is shown in Figures 1 and 2 in phantom lines, from opposite ends of which project journal bearings 3i and 32. These bearings are respectively supported by journal rests 33 and 34, which determine the axis about which the roll is to be. rotated as is the usual practice with machines of this type. i

The bed i5 is provided with a rearward extension on which is formed throughout its length a pair of flat and V guideways 36 and .37. Mounted on the guideways Efaand 3? for movement there along is a bed plate 33, which supports a slide 35} for the grinding wheel carriage 40. The bed plate 38 in addition supports the mechanism for effecting the translation thereof, as well as providing the operators station. For this purpose the bed plate has extending upwardly therefrom a pedestal for the operators seat 42. Within reach of the operators seat 42 is the mechanism, as will later be described, for controlling all of the movements of the several units .of the machine.

mounted on the shaft 46 is a spur gear 41 and bevel gear 48. Splined to the shaft between these gears in a clutch member 49, having provided on one face clutch tooth 58 for engagement with complementary clutch teeth 5| on the adjacent face of the spur gear 41. The clutch member 49 is provided on its other side with clutch teeth 52 adapted to engage with complementary clutch teeth 53 on the adjacent face of the bevel gear 48. From this it will be seen that depending upon the position of the clutch member 49, either the spur or bevel gear will be connected with the shaft. In order to effect the adjustment or shifting of the clutch member it is provided with .a circumferential groove 54, receiving the forked end of a shifter lever 55 keyed or otherwse secured to a shaft 56 that projects beyond one face of the housing 43. Secured to the'said projecting end of the shaft 56 is a manually actuable lever 57 whereby movement thereof effects oscillation of the shaft 56 and shifter --fork 55.

In axial alignment with and rotatively supported by the other wall of the housing 43 is a shaft 58, having loosely mounted thereon a spur and bevel gear 59 and 80. These gears may be independent gears keyed to one another for simultaneous rotation or may be integral as illustrated in Figure 9. The spur gear 59, see Figure 10, meshes with a gear 6| keyed or otherwise secured to a shaft 62, rotatively journaled in the walls of housing 43. This shaft 62 has'keyed to its other end a second gear 63 which meshes with the spur gear 41, loosely journaled on the motor shaft 46. From this it will be seen that depending upon the position of the clutch member 49 either the bevel gear 48 will be driven direct or the bevel gear will be rotated through the transmission line, including the gears 41, 63, El and 59. l

This mechanism constitutes a reversing mechanism since the gear 48 will be driven in the opposite direction from that of the gear 60. The bevel gears 48 and 60 are at all times/in mesh with a large bevel gear 64, loosely journaled on a driving shaft 65. In order to be clutched or keyed to this shaft the bevel gear 64 is provided with clutch teethfifi adapted to be engaged by clutch teeth 61 on one side of clutch member 68. The clutch member 68 is provided with a circumferential groove 69, receiving the forked end 10 of a clutch shifter lever H, keyed or otherwise securedto a shaft 12 journaled in the housing 43 and projecting beyond the face thereof. The projecting end of the shaft 12 carries a manually actuable lever 13 whereby the clutch is shifted into and out of engagement with the bevel gear 64.

The above described mechanism constitutes a power reversing drive for the drive shaft and in order to effect the manual rotation of the shaft, such as for set-up purposes and the like, the following mechanism is resorted to.

with clutch teeth 74 adapted to engage with clutch teeth 75 formed on the adjacent face of a worm wheel 16 loosely journaled on the shaft 65. Meshing with the worm wheel 16 is a worm ll integral with or secured to a Worm shaft 18, journaled in the walls of the housing 43 and projecting beyond the forward face thereof. Keyed or otherwise secured to this extending portion of the worm shaft 1.8 is a hand wheel T9 whereby the said shaft and consequently the Worm are manually rotated; From this will be seen that the shaft 65 may be manually actuated in reverse directions.

In axial alignment with the drive shaft 65 and journaled in the bed plate-38 is a driven shaft 80, carrying. on its lower end a rack pinion or gear meshing with the teeth of rack bar 82 secured to the bed extension 35 shown in Figure 5 as secured to the inner longitudinal edge of the V guide way 31 formed thereon. -It is the shaft 80 that is power driven through the above described power drive reversing mechanism and the manual drive operable on the driving shaft 65. This shaft therefore is adapted to be con nected with the drive shaft 65 for effecting the rotation of the shaft 85. As illustrated in the drawings the shafts 65 and 80 may be directly coupled for driving the driven shaftat a high speed or indirectly coupled for driving the said shaft at a low speed.

This mechanism comprises a clutch member 83 splined on the shaft 80 and being provided on opposite sides thereof with clutch teeth 84 and.

85. The clutch 83 is provided with a circumferential groove 86 receiving the forked end 8 of clutch shifter lever 88, keyed or otherwise secured to a shaft 89 journaled in and projecting beyond the housing 43. To the projecting end of the shaft 89 is secured a lever 90 whereby the The clutch member 68 is provided on its other side:

1,999,778 said shaft is oscillated for correspondingly sciilatihg the clutch lever 8 8and shifting the clutch member 33. i

For efiecting a direct coupling between the driving shaft 55 and the driven'shaft 8B the clutch teeth 84 are adapted to engage complementary clutch teeth BI formed on a gear 92 keyed-or otherwise secured to the lower end of the driving shaft 65. hi order to indirectly coiiple the said shafts the clutch teeth 35 are adapted to engage with complementary clutch teeth 33 formed on a-large gear 94 keyed near the upper end of the driven shaft 80. Meshing with the gear as is a pinion keyed to the lower endof anintermediate shaft 33 rotatively journaledin a'boss or lug l p'rojectin'g inwardly from one wall of the housing 43. The shaft 95 extends entirely through the said boss or lug '91 "and has keyed to'its upper end a second gear 93 which meshes with the gear 92 on the driving shaft 65. From this it will be seen that the shaft Bil is rotated thereby are correspondingly traversed relative to' the guiding ways on the bed extension 3'5.

As was above noted, the bed plate 38 has mount ed thereon a slide 33 which supports the grinding wheel carriage 4'9. The slide 39 is adapted to be actuated relative to the bed plate 33. toward and from the work for which purpose it is provided with a lug 99 in which is secured anut I30, having threads adapted to mesh with the threads'of a cross feed screw Iiii. Thesorew IE3! i's'mounted for rotation but held against axial movement in a bracket I 02 secured to the rear end of the bed plate '38. In order to'rotat'e the screw it! it has keyed or otherwise secured to it a worm wheel 593 having meshed therewith 'a Worm I34 on the end of a worm shaft 135. The worm shaft I535 is connected in any desirable manner with the motor shaft of an electric motor or prime mover let, see Figure a, mounted on the bed plate 38 to one side of the slide. From this it will be seen that the grinding wheel carriage, together with the slide and parts "carried thereby, may be adjusted toward and from thework.

The slide 39 is provided at its forward end with trunnion bearings it? in which is vrotativeiy mounted a trunnion shaft I58 which is carried by a depending lug 10?: carried by the "grinding wheel carriage 4B and whereby thesaijd carriage.

is oscillatably mounted for movement toward and from the work. The carriage 40 provides-suitable bearings He in which is journaled a spindle I I I having secured to its 'oneend a grinding wheel H2. The grinding wheel H2 is partially enclosed by a hood or guard II3 for confining the coolantusual with grinding machines. Mounted on the upper surface of the carriage 4!] is an .electric motor or prime mover H4 connected by a suit able transmission enclosed within the guard I 55, see Figure 2, withthe grinding wheel spindle I I I whereby the said spindle and grinding wheel are rotated at the usual high or grinding rate of speed.

In order to effect the oscillation of thdslide 3 3, carriage 40. and grinding wheel I12 toward and from the work thebed extension 35 has securedto its rear surface a, camber mechanism comprising a su iementary bed or support lit. The cambering mechanism is best illustrated in Figures 4 to 7 inclusive, and as there shown, comprises a cambering bar carriage 'I I I mounted in a guide way [I8 formed in the upper surface-of the support I I6. The carriage H1 is adapted to be manually axially adjusted relative to the support I I6 for which purpose it carries on its under surface substantially throughout its length a rack bar I I9, having its teeth meshing with a rack pinion I23, see Figure 3, keyed or otherwise secured to a shaft I2I journaled in the support H6. The shaft i2I has its outer end I22 formed to receive a suitable wrench whereby it is manually rotated for efiecting the adjustment of the carriage.

'The carriage II'I on its upper surface and throughout its length is provided with a groove o'r slot I 23 in which is disposed a flexible cam or camberingbar I24 adapted to be sprung or bent to the desired contour which is to be reproduced on the surface of the work. To effect this springing of thebar it has projecting from one face thereof a lug I 25 received in correspondingly shaped grooves I26 formed in bending members I21 and clamp members I28. The bar I24 rests at opposite ends on pins I29 and I30 and has contacting on the upper surface of the lug I26 other pins I3I and I32. It is about the pins I29 and I30 that the bar is sprung in a downward direction while the pins I3l and I32 are resorted to for determining the points about which the springing of the bar takes place in an upward direction. For eifecting said springing of the bar bending members IZ'I are utilized, for which purpose they have passed through'them screws I33 threaded at their lower ends into the carriage III. -By reference to the drawings it will be seen that if the screws I33 are actuated downwardly the members I21 will be correspondingly adjusted and through the grooves I26 and lug I25 will correspondingly shift or bend the bar at various points intermediate the pins I29 and I30. Also'it will be noted that if the screws I33 are actuated upwardly the bar will be similarly shifted or bent at points intermediate the pins I3I and I32. sired position the clamp members I28 are screwed home, utilizing the pinch screws I34 carried by the clamp members I28 and the clamp screws I35 carried by the carriage H7 and engaging the said clampmembers I28.

Riding on the upper surface I36 of the bar I24 is a roller I31 rotatively carried by an arm I38 keyed or otherwise secured to the outer end of a spline shaft I39 rotatively journaled in a'bear-' ing I40 secured to the rear end of the bed plate 38. The spline shaft I39 is journaled for oscill-a thin in lugs I4I, depending from the slide 39, and has splined thereto to partake of the oscillatory movement ofthe shaft a finger I42. The outer end of the finger I42 contacts with the lower end of a screw member 143 associated with the carriage 4B. The screw member I43 constitutes the coupling between the carriage 40 and the mechanism operable by the cambering bar I 24 whereby the carriage 40 is oscillated in accordance with the contour of the bar I24.

In order to take up for'inevitable wear on the grinding wheel II 2 and to compensate for the removal of material from the wheel, as by trueing, the carriage 4B is adapted to be independently adjusted about the trunnion I08. For this purpose the screw I43 is threadedinto anut I44 rotatively journaled in a lug I45 forming a part of the carriage 4B. The nut I44 has secured to it or formed integral therewith a worm wheel I46 in mesh with a worm I41 on a worm shaft I48. The worm'shaft I48 projects beyond the wall of After the bar is adjusted to the de-' the carriage 40 to receive a hand wheel I 49 whereby the said worm is rotated.

From the foregoing it will be noted that the carriage 40 and grinding wheel I I2 carried thereby are, actuated about the axis of the trunnion I08 tofeed grinding wheel H2 into the work in accordance with the contour provided on the cam bar I24. It will further be noted that since the cam bar is shaped throughout its length the work or roll being operated upon will becorrespondingly shaped from end to end. As shown in Figures 1 and 2, the extreme corners of the work are chamfered or beveled as at l50, and asnoted above, in the past it was customary to either shape the wheel to provide this bevel or to remove the roll from the machine and perform this operation in a separate machine.

By this invention this operation is performed simultaneously with the formation of the body portion of the roll. To effect the same the carriage I IT has secured to it additional cam pieces I5I and I52. These pieces or members, as seen in Figure 5, are substantially L shaped, having passed through the shorter leg I53 thereof bolts I54 which have their heads disposed in a T slot I55 formed longitudinally through the carriage In. It is to be understood that it is not necessary to use both members I5I and I52 if both ends of the work are not to be cut away orcontoured.

It is also to be understood that if a different or more abrupt contour or of some desired configuration is to be formed in the body portion of the work, that is, intermediate the ends thereof a cam member similar to I5l or I52 may be disposed at the desired point relative to the cam bar I24 for effecting this operation. It will now be clear that by the present invention a roll or other cylindrical part may be provided from end to end with a uniform crown or convexity as is usual practice in mill rolls, and at the same time may have the ends or any intermediate portion thereof further contoured or deformed in accordance with the requirements without removing the roll from the machine and without additional expenditure of timeior money for equipment, 7

What is claimed is: 1. In a grinding machine of the class described the combination with a bed, a work support and wheel support mounted on the bed for relative translation one with respect to theother, and a grinding wheel carriage on the wheel support for oscillation toward and from the work support, of

means for effecting the oscillation of said carriage comprising a support secured to the bed, a car- 'riage, mounted on the support for adjustment relative thereto to position same with respect to the work, a flexible cambering bar, bending pins on the carriage for supporting the cambering bar, bending means carried by the carriage for bending the bar about the bending pins, means on the carriage for clamping the bar in bended position, and cam members on the carriage for modifying the oscillation of the grinding wheel carriage a effected by the cambering bar.

2. In a grinding machine of the class described and a plurality of cams on said second carriage effecting an oscillation of the grinding wheel carriage in accordance with the combined contour of the plurality of cams for producing the combined contour of the cams on the work on the work support. 1 a

3. In a grinding machine of the class described the combination of a bed, a work support, a grinding wheel support, said supports being movable axially relative to one another, a grinding wheel.

carriage, means pivotally connecting the grinding wheel carriage to the grinding wheel support whereby .the carriage is oscillatable relative thereto, a second carriage associated with the bed and between which and the grinding wheel support relative axial movement is had, a plurality of cams on said second carriage effecting an oscillation of the grinding wheel carriage in accordance with the combined contour of the plurality of cams for producing the combined contour of the cams on the work on the work support, and one of said cams being bendable to vary the contour thereof and consequently the contour of the work.

4. In a grinding machine of the class'described the combination of a bed, a work support, a grinding wheel support, said supports being movable axiallyrelative to one another, a grinding wheel carriage, means pivotally connecting the grinding wheel carriage to the grinding wheel support whereby the carriage is oscillatable relative thereto, a second carriage associated with the bed and between which and the grinding wheel support relative axial movement is had, and a plurality of cams on said second carriage effecting an oscillation of the grinding wheel carriage in accordance with the combined contour of the plurality of cams for producing the combined contour of the cams on the work on the work support, one of said cams being adjustable relative to the carriage in the direction of relative movement of the cams and grinding wheel supports to vary the contour of the combined cams and consequently the contour produced on the work.

5. In a grinding machine of the class described the combination of a bed, a work support, a grinding wheel support, said supports being movable axially relative to one another, a grinding wheel carriage, means pivotally connecting the grinding wheel carriage to the grinding wheel support whereby the carriage is oscillatable relative thereto, asecond carriage associated with the bed and between which and the grinding wheel support relative axial movement is had, a plurality of cams on said second carriage effecting an oscillation of the grinding wheel carriage in accordance with the combined contour of the plurality of cams for producing the combined'contour of the cams on the work on the work support, and means associated with said second carriage and cams for varying the contour of one of said cams and for securing the cams in different positions relative to one another to vary the composite contour of said cams and the ultimate contour produced on the work.

6. In a roll grinder of the class described the combination with a bed, a roll support mounted on said bed, and a grinding wheel support mounted on said bed, of means for efiecting a the work, a cambering mechanism including a bendable bar for effecting the oscillation of the pivoted support to contour the roll throughout its major portion, means associated with the bar for controlling the bend therein for thereby varying the major contour of the roll, a pair of adjustable cam plates associated with the bendable bar for further oscillating the support to provide the chamfers on the roll at the end of the contoured portion, and means for supporting the cambering mechanism and the cam members for adjustment relative to the bed in a direction axially of the roll support for varying the position relative to the roll that the contour is reproduced on the work.

'7. A device for providing a contour on mill rolls comprising a support, a carriage on said support, a cam bar on the carriage, means carried by the carriageand cooperating with the cam bar for deforming said bar to the desired contour to be reproduced on the roll, comprising a plurality of adjusting screws spacedly located relative to the length of the bar, bending pins at the ends of the bars supplying pivot points about which the bar is' bent, and means for translating the carriage relative to the support.

8. A device for providing a contour on mill rolls comprising a support, a carriage on said support, a cam bar on the carriage, means carried by the carriage and cooperating with the cam bar for deforming said bar to the desired contour to be reproduced on the roll, comprising a plurality of adjusting screws spacedly located relative to the length of the bar, bending pins at the ends of the bars supplying pivot points about which the bar is bent, means for translating the carriage relative to the support, and additional cam members on the carriage for supplementing the contour produced on the roll by the cam bar.

9. A device for providing a contour on mill rolls comprising a support, a carriage on said support, a cam bar on the carriage means carried by the carriage and cooperating with the cam bar for deforming said bar to the desired contour to be reproduced on the roll, comprising a plurality of adjusting screws spacedly located relative to the length of the bar, bending pins at the ends of the bars supplying pivot points about which the bar is bent, means for translating the carriage relative to the support, additional cam members on the carriage for supplementing the contour produced on the roll by the cam bar, and

means for adjustably positioning the cam members on the carriage relative to the cam bar. WILLETTS PEASLEE. FREDERICK S. I-IAAS. 

